vmalloc: call flush_cache_vunmap() from unmap_kernel_range()
authorTejun Heo <tj@kernel.org>
Fri, 20 Feb 2009 23:38:48 +0000 (15:38 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Sat, 21 Feb 2009 01:57:49 +0000 (17:57 -0800)
Impact: proper vcache flush on unmap_kernel_range()

flush_cache_vunmap() should be called before pages are unmapped.  Add
a call to it in unmap_kernel_range().

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Nick Piggin <npiggin@suse.de>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: <stable@kernel.org> [2.6.28.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
mm/vmalloc.c

index 4dd2636d0b92664230f9d7fa8b439cea2802e34f..903cad46e796b94bde12306efbce62b532be3713 100644 (file)
@@ -1012,6 +1012,8 @@ void __init vmalloc_init(void)
 void unmap_kernel_range(unsigned long addr, unsigned long size)
 {
        unsigned long end = addr + size;
+
+       flush_cache_vunmap(addr, end);
        vunmap_page_range(addr, end);
        flush_tlb_kernel_range(addr, end);
 }